Removing Cursor#win32_new method

[ShahzaibIbrahim]

Remove Cursor#win32_new method similar to other other resources e.g. Image, Region, Path etc. Also there is no calling to this method.

[github-actions]

Test Results

   539 files   -  7     539 suites   - 7   39m 0s ⏱️ + 8m 10s
 4 359 tests  - 54   4 344 ✅  - 52   14 💤  - 3  1 ❌ +1 
16 668 runs   - 54  16 543 ✅  - 52  124 💤  - 3  1 ❌ +1 

For more details on these failures, see this check.

Results for commit bcbab37. ± Comparison against base commit c0dbf00.

This pull request removes 54 tests.

AllWin32Tests ImageWin32Tests ‑ testDisposeDrawnImageBeforeRequestingTargetForOtherZoom
AllWin32Tests ImageWin32Tests ‑ testDrawImageAtDifferentZooms(boolean)[1] true
AllWin32Tests ImageWin32Tests ‑ testDrawImageAtDifferentZooms(boolean)[2] false
AllWin32Tests ImageWin32Tests ‑ testImageDataForDifferentFractionalZoomsShouldBeDifferent
AllWin32Tests ImageWin32Tests ‑ testImageShouldHaveDimesionAsPerZoomLevel
AllWin32Tests ImageWin32Tests ‑ testRetrieveImageDataAtDifferentZooms(boolean)[1] true
AllWin32Tests ImageWin32Tests ‑ testRetrieveImageDataAtDifferentZooms(boolean)[2] false
AllWin32Tests TestTreeColumn ‑ test_ColumnOrder
AllWin32Tests Test_org_eclipse_swt_dnd_DND ‑ testByteArrayTransfer
AllWin32Tests Test_org_eclipse_swt_dnd_DND ‑ testFileTransfer
…